Punk nostalgia is everywhere these days, and the official date when “back in the day” begins just keeps getting more and more recent. (Witness the 90’s revival that delivered the 20th-anniversary hoopla for Nirvana’s “Nevermind” and Riot Grrrl.)

The book "Visual Vitriol" examines the punk subculture from an anthropological standpoint.

Saturday night at the Trouser House art space on St. Claude Avenue, curator David Ensminger keeps the remember-when going, with an exhibition of over 300 original American punk rock flyers and posters selected from the collection in his summer 2011 book, “Visual Vitriol: The Street Art and Subcultures of the Punk and Hardcore Generation.”

Ensminger, a professor at Lee College near Houston, augmented the original pieces in his book with musings on the flyers’ significance as folk art that chronicled the scene, with a focus on multiculturalism within it.